From the bottom of the yellow box on the scripts:
<p><div align="center">
<font face="arial, helvetica" size"-2">Free JavaScripts provided<br>
by <a href="http://javascriptsource.com">The JavaScript Source</a></font>
</div><p>
align is deprecated, paragraph elements can't contain block level elements, font element is deprecated, paragraph is closed incorrectly, instead another paragraph is opened.
<p style="text-align:center; font:xx-small 'arial', 'helvetica', sans-serif;">
Free JavaScripts provided<br>
by <a href="http://javascriptsource.com">The JavaScript Source</a>
</p>
I'll have a look around see what other scripts could use updating.
A couple of suggestions though, for scripts that require multiple files, have a zip file that users can download. It just makes it easier to retrieve all of the necessary componants.
Also, how about three boxes, one for JavaScript, one for HTML and one for CSS (if required)?